Consider joining IDOC as a way to increase your scope of practice, get great practice management tips, and get continuing education at the annual meetings. The premium membership dues more than pay for themselves in incentives, rebates and discounts from the many supported vendors.

From their site:

IDOC (Independent Doctors of Optometric Care) is a leading group of independent, private practice Optometrists delivering a complete range of Optometric eye care services. As the pre-eminent practice development group in the industry, IDOC is dedicated exclusively to making independent optometric practices more successful.

IDOC members are forward thinking practitioners who remain on the forefront of medical advances and technology, enabling them to provide outstanding patient care.

IDOC provides benefits and services geared specifically to the needs of its members. IDOC members obtain superior buying power through vendor partner programs, continuing education, practice management guidance and topical communications that enhance their practice and allow them to better serve their patients.

http://www.idoc.net/